I started the thread to help me identify these gears in order to source the correct front mech for my '70 Cinelli, currently sporting a push rod Valentino. The original NGS (?) mech I posted was given to me and I knew it was post-77 Still, I was confused as to which gear would be correct for the Model B and how to identify them, witness the NOS gears shown online with their suspect boxes. If you look at the Velobase list of Campy front gears, there is a dead zone in the production of front mechs for that year. VeloBase.com - Component Listing

The production of some gears end before 1970, others start after, some have no end dates. Now that the gears are almost fully scrutinized what say ye? @juvela suggested the 1st or second gen Record might be the way to go, but I don't need the cable stop. Opinions welcome. Anyone have Catalog 16 form '69? Never mind, found it.